./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 510f6399de30aae42aa795fff1cb0eb2c142b650 ....................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 510f6399de30aae42aa795fff1cb0eb2c142b650 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:15:35,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:15:35,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:15:35,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:15:35,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:15:35,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:15:35,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:15:35,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:15:35,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:15:35,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:15:35,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:15:35,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:15:35,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:15:35,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:15:35,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:15:35,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:15:35,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:15:35,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:15:35,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:15:35,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:15:35,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:15:35,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:15:35,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:15:35,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:15:35,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:15:35,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:15:35,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:15:35,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:15:35,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:15:35,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:15:35,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:15:35,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:15:35,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:15:35,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:15:35,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:15:35,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:15:35,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:15:35,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:15:35,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:15:35,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:15:35,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:15:35,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:15:35,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:15:35,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:15:35,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:15:35,242 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:15:35,242 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:15:35,243 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:15:35,243 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:15:35,251 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:15:35,251 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:15:35,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:15:35,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:15:35,253 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:15:35,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:15:35,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:15:35,254 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:15:35,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:15:35,256 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:15:35,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:15:35,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:15:35,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:15:35,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:15:35,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:15:35,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:15:35,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:15:35,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:15:35,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:15:35,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:15:35,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:15:35,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:15:35,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:15:35,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:35,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:15:35,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:15:35,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:15:35,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:15:35,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:15:35,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:15:35,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:15:35,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:15:35,264 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 510f6399de30aae42aa795fff1cb0eb2c142b650 [2021-10-16 02:15:35,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:15:35,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:15:35,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:15:35,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:15:35,644 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:15:35,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-16 02:15:35,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/595d99aea/cf29939efb53466489dee76163389b1f/FLAG75ffe7df4 [2021-10-16 02:15:36,489 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:15:36,490 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-16 02:15:36,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/595d99aea/cf29939efb53466489dee76163389b1f/FLAG75ffe7df4 [2021-10-16 02:15:36,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/595d99aea/cf29939efb53466489dee76163389b1f [2021-10-16 02:15:36,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:15:36,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:15:36,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:36,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:15:36,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:15:36,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:36" (1/1) ... [2021-10-16 02:15:36,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2cb3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:36, skipping insertion in model container [2021-10-16 02:15:36,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:15:36" (1/1) ... [2021-10-16 02:15:36,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:15:36,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:15:37,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-16 02:15:37,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:37,405 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:15:37,455 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-16 02:15:37,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:15:37,581 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:15:37,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37 WrapperNode [2021-10-16 02:15:37,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:15:37,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:37,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:15:37,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:15:37,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:15:37,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:15:37,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:15:37,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:15:37,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:37,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:15:38,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:15:38,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:15:38,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:15:38,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (1/1) ... [2021-10-16 02:15:38,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:15:38,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:38,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:15:38,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:15:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:15:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:15:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:15:38,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:15:54,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:15:54,924 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:15:54,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:54 BoogieIcfgContainer [2021-10-16 02:15:54,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:15:54,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:15:54,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:15:54,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:15:54,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:15:36" (1/3) ... [2021-10-16 02:15:54,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276bed0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:54, skipping insertion in model container [2021-10-16 02:15:54,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:15:37" (2/3) ... [2021-10-16 02:15:54,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276bed0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:15:54, skipping insertion in model container [2021-10-16 02:15:54,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:15:54" (3/3) ... [2021-10-16 02:15:54,941 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label47.c [2021-10-16 02:15:54,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:15:54,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:15:55,005 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:15:55,012 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:15:55,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:15:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:15:55,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:55,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:15:55,035 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:55,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1066405197, now seen corresponding path program 1 times [2021-10-16 02:15:55,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:55,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335838792] [2021-10-16 02:15:55,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:55,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:55,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:55,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335838792] [2021-10-16 02:15:55,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335838792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:15:55,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:15:55,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:15:55,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582696618] [2021-10-16 02:15:55,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:15:55,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:15:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:15:55,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:15:55,349 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:15:55,566 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-10-16 02:15:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:15:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 02:15:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:15:55,580 INFO L225 Difference]: With dead ends: 23 [2021-10-16 02:15:55,581 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:15:55,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:15:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:15:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-10-16 02:15:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:15:55,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-10-16 02:15:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:15:55,627 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:15:55,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:15:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:15:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:15:55,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:15:55,628 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-16 02:15:55,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:15:55,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:15:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:15:55,630 INFO L82 PathProgramCache]: Analyzing trace with hash 12737564, now seen corresponding path program 1 times [2021-10-16 02:15:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:15:55,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225510772] [2021-10-16 02:15:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:55,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:15:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:15:56,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:15:56,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225510772] [2021-10-16 02:15:56,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225510772] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:15:56,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632726719] [2021-10-16 02:15:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:15:56,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:15:56,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:15:56,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:15:56,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:15:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:15:56,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:15:56,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:16:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:16:06,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:59,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-16 02:19:59,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [129213735] [2021-10-16 02:19:59,240 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-16 02:19:59,241 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:19:59,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:19:59,252 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:19:59,253 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:19:59,291 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,295 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:59,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:19:59,298 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:59,299 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:19:59,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-16 02:19:59,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:59,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:59,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:19:59,344 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:19:59,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:19:59,348 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:19:59,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:19:59,371 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:59,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-16 02:19:59,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:19:59,375 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:149, output treesize:152 [2021-10-16 02:19:59,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:59,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:59,595 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_10| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:19:59,599 INFO L168 Benchmark]: Toolchain (without parser) took 262967.40 ms. Allocated memory was 98.6 MB in the beginning and 3.0 GB in the end (delta: 2.9 GB). Free memory was 58.0 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 676.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,600 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:59,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 944.75 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 51.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 187.84 ms. Allocated memory is still 98.6 MB. Free memory was 51.3 MB in the beginning and 41.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,603 INFO L168 Benchmark]: Boogie Preprocessor took 229.19 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 41.8 MB in the beginning and 87.5 MB in the end (delta: -45.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,604 INFO L168 Benchmark]: RCFGBuilder took 16925.72 ms. Allocated memory was 119.5 MB in the beginning and 803.2 MB in the end (delta: 683.7 MB). Free memory was 87.5 MB in the beginning and 499.2 MB in the end (delta: -411.7 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,608 INFO L168 Benchmark]: TraceAbstraction took 244667.90 ms. Allocated memory was 803.2 MB in the beginning and 3.0 GB in the end (delta: 2.2 GB). Free memory was 498.1 MB in the beginning and 2.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 412.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:59,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 77.1 MB in the beginning and 77.0 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 944.75 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 51.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 187.84 ms. Allocated memory is still 98.6 MB. Free memory was 51.3 MB in the beginning and 41.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 229.19 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 41.8 MB in the beginning and 87.5 MB in the end (delta: -45.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 16925.72 ms. Allocated memory was 119.5 MB in the beginning and 803.2 MB in the end (delta: 683.7 MB). Free memory was 87.5 MB in the beginning and 499.2 MB in the end (delta: -411.7 MB). Peak memory consumption was 284.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 244667.90 ms. Allocated memory was 803.2 MB in the beginning and 3.0 GB in the end (delta: 2.2 GB). Free memory was 498.1 MB in the beginning and 2.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 412.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_10| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_10|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:19:59,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:20:02,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:20:02,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:20:02,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:20:02,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:20:02,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:20:02,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:20:02,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:20:02,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:20:02,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:20:02,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:20:02,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:20:02,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:20:02,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:20:02,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:20:02,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:20:02,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:20:02,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:20:02,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:20:02,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:20:02,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:20:02,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:20:02,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:20:02,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:20:02,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:20:02,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:20:02,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:20:02,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:20:02,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:20:02,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:20:02,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:20:02,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:20:02,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:20:02,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:20:02,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:20:02,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:20:02,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:20:02,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:20:02,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:20:02,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:20:02,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:20:02,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:20:02,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:20:02,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:20:02,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:20:02,532 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:20:02,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:20:02,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:20:02,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:20:02,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:20:02,533 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:20:02,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:20:02,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:20:02,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:20:02,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:20:02,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:20:02,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:20:02,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:20:02,538 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:20:02,538 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:20:02,538 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:20:02,538 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:20:02,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:20:02,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:20:02,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:20:02,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:20:02,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:20:02,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:20:02,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:02,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:20:02,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:20:02,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:20:02,541 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:20:02,542 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:20:02,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:20:02,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:20:02,543 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:20:02,543 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 510f6399de30aae42aa795fff1cb0eb2c142b650 [2021-10-16 02:20:03,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:20:03,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:20:03,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:20:03,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:20:03,058 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:20:03,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-16 02:20:03,137 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/8da333376/7d36e0d738fd4f25a7a3cbd7df2e6583/FLAGc30bb276e [2021-10-16 02:20:04,039 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:20:04,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c [2021-10-16 02:20:04,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/8da333376/7d36e0d738fd4f25a7a3cbd7df2e6583/FLAGc30bb276e [2021-10-16 02:20:04,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/data/8da333376/7d36e0d738fd4f25a7a3cbd7df2e6583 [2021-10-16 02:20:04,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:20:04,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:20:04,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:04,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:20:04,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:20:04,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:04" (1/1) ... [2021-10-16 02:20:04,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7102f38f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:04, skipping insertion in model container [2021-10-16 02:20:04,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:04" (1/1) ... [2021-10-16 02:20:04,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:20:04,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:20:04,510 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-16 02:20:04,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:04,972 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:20:05,002 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/sv-benchmarks/c/eca-rers2012/Problem14_label47.c[3529,3542] [2021-10-16 02:20:05,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:20:05,240 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:20:05,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05 WrapperNode [2021-10-16 02:20:05,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:20:05,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:05,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:20:05,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:20:05,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:20:05,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:20:05,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:20:05,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:20:05,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:20:05,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:20:05,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:20:05,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:20:05,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (1/1) ... [2021-10-16 02:20:05,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:20:05,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:20:05,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:20:05,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:20:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:20:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:20:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:20:05,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:20:09,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:20:09,404 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:20:09,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:09 BoogieIcfgContainer [2021-10-16 02:20:09,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:20:09,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:20:09,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:20:09,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:20:09,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:04" (1/3) ... [2021-10-16 02:20:09,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c500996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:09, skipping insertion in model container [2021-10-16 02:20:09,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:05" (2/3) ... [2021-10-16 02:20:09,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c500996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:09, skipping insertion in model container [2021-10-16 02:20:09,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:09" (3/3) ... [2021-10-16 02:20:09,418 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label47.c [2021-10-16 02:20:09,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:20:09,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:20:09,492 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:20:09,500 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:20:09,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:20:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-16 02:20:09,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:09,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:09,554 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:09,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2021-10-16 02:20:09,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:09,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245476701] [2021-10-16 02:20:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:09,580 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:09,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:09,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:20:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:09,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:20:09,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:10,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:10,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:10,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245476701] [2021-10-16 02:20:10,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245476701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:10,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:10,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:20:10,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296700506] [2021-10-16 02:20:10,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:20:10,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:20:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:10,297 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:19,357 INFO L93 Difference]: Finished difference Result 866 states and 1574 transitions. [2021-10-16 02:20:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:20:19,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-16 02:20:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:19,377 INFO L225 Difference]: With dead ends: 866 [2021-10-16 02:20:19,377 INFO L226 Difference]: Without dead ends: 538 [2021-10-16 02:20:19,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-16 02:20:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 360. [2021-10-16 02:20:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-10-16 02:20:19,474 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 33 [2021-10-16 02:20:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:19,475 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-10-16 02:20:19,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-10-16 02:20:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-16 02:20:19,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:19,481 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:19,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:19,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:19,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:19,693 INFO L82 PathProgramCache]: Analyzing trace with hash 598342279, now seen corresponding path program 1 times [2021-10-16 02:20:19,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:19,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249822435] [2021-10-16 02:20:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:19,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:19,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:19,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:19,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:20:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:19,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:20:19,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:20,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:21,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:21,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249822435] [2021-10-16 02:20:21,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249822435] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:21,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:21,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:20:21,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10177160] [2021-10-16 02:20:21,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:20:21,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:20:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:21,192 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:25,753 INFO L93 Difference]: Finished difference Result 1430 states and 2032 transitions. [2021-10-16 02:20:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:20:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-16 02:20:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:25,770 INFO L225 Difference]: With dead ends: 1430 [2021-10-16 02:20:25,770 INFO L226 Difference]: Without dead ends: 1072 [2021-10-16 02:20:25,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-10-16 02:20:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-10-16 02:20:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.315592903828198) internal successors, (1409), 1071 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1409 transitions. [2021-10-16 02:20:25,836 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1409 transitions. Word has length 112 [2021-10-16 02:20:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:25,837 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1409 transitions. [2021-10-16 02:20:25,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1409 transitions. [2021-10-16 02:20:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-16 02:20:25,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:25,850 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:25,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:26,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:26,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:26,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1718159400, now seen corresponding path program 1 times [2021-10-16 02:20:26,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:26,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897641226] [2021-10-16 02:20:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:26,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:26,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:26,066 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:20:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:26,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:20:26,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:27,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:20:32,657 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:32,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897641226] [2021-10-16 02:20:32,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897641226] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:32,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:32,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:20:32,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552623812] [2021-10-16 02:20:32,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:20:32,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:20:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:32,665 INFO L87 Difference]: Start difference. First operand 1072 states and 1409 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:40,139 INFO L93 Difference]: Finished difference Result 2498 states and 3353 transitions. [2021-10-16 02:20:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:20:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-10-16 02:20:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:40,150 INFO L225 Difference]: With dead ends: 2498 [2021-10-16 02:20:40,150 INFO L226 Difference]: Without dead ends: 1606 [2021-10-16 02:20:40,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-10-16 02:20:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-10-16 02:20:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.3121495327102803) internal successors, (2106), 1605 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2106 transitions. [2021-10-16 02:20:40,216 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2106 transitions. Word has length 169 [2021-10-16 02:20:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:40,217 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2106 transitions. [2021-10-16 02:20:40,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2106 transitions. [2021-10-16 02:20:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-10-16 02:20:40,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:40,225 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:40,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:40,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:40,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:40,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1026676809, now seen corresponding path program 1 times [2021-10-16 02:20:40,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:40,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574607323] [2021-10-16 02:20:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:40,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:40,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:40,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:40,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:20:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:41,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:20:41,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-16 02:20:41,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-10-16 02:20:42,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:42,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574607323] [2021-10-16 02:20:42,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574607323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:42,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:42,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:20:42,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263622354] [2021-10-16 02:20:42,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:20:42,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:42,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:20:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:42,116 INFO L87 Difference]: Start difference. First operand 1606 states and 2106 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:46,523 INFO L93 Difference]: Finished difference Result 4456 states and 6006 transitions. [2021-10-16 02:20:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:20:46,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-10-16 02:20:46,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:46,543 INFO L225 Difference]: With dead ends: 4456 [2021-10-16 02:20:46,543 INFO L226 Difference]: Without dead ends: 3030 [2021-10-16 02:20:46,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:20:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-16 02:20:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2318. [2021-10-16 02:20:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.2529132498921018) internal successors, (2903), 2317 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2903 transitions. [2021-10-16 02:20:46,618 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2903 transitions. Word has length 178 [2021-10-16 02:20:46,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:46,618 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2903 transitions. [2021-10-16 02:20:46,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:46,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2903 transitions. [2021-10-16 02:20:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-16 02:20:46,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:46,622 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:46,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:20:46,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:46,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:46,836 INFO L82 PathProgramCache]: Analyzing trace with hash 215067956, now seen corresponding path program 1 times [2021-10-16 02:20:46,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:46,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146002681] [2021-10-16 02:20:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:46,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:46,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:46,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:46,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:20:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:47,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:20:47,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:48,707 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:20:48,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:20:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:20:50,174 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:20:50,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146002681] [2021-10-16 02:20:50,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146002681] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:20:50,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:20:50,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 02:20:50,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529685657] [2021-10-16 02:20:50,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:20:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:20:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:20:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:20:50,177 INFO L87 Difference]: Start difference. First operand 2318 states and 2903 transitions. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:20:55,355 INFO L93 Difference]: Finished difference Result 4870 states and 6076 transitions. [2021-10-16 02:20:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:20:55,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-10-16 02:20:55,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:20:55,374 INFO L225 Difference]: With dead ends: 4870 [2021-10-16 02:20:55,375 INFO L226 Difference]: Without dead ends: 2674 [2021-10-16 02:20:55,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:20:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-10-16 02:20:55,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2318. [2021-10-16 02:20:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 2317 states have (on average 1.096245144583513) internal successors, (2540), 2317 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 2540 transitions. [2021-10-16 02:20:55,441 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 2540 transitions. Word has length 192 [2021-10-16 02:20:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:20:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 2318 states and 2540 transitions. [2021-10-16 02:20:55,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:20:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 2540 transitions. [2021-10-16 02:20:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-10-16 02:20:55,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:20:55,448 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:20:55,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:20:55,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:20:55,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:20:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:20:55,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1743445993, now seen corresponding path program 1 times [2021-10-16 02:20:55,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:20:55,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593819859] [2021-10-16 02:20:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:20:55,665 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:20:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:20:55,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:20:55,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:20:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:20:56,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:20:56,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:20:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-16 02:20:58,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-10-16 02:21:02,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:21:02,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593819859] [2021-10-16 02:21:02,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593819859] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:02,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:21:02,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-16 02:21:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542636654] [2021-10-16 02:21:02,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:21:02,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:21:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:21:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:02,936 INFO L87 Difference]: Start difference. First operand 2318 states and 2540 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:07,060 INFO L93 Difference]: Finished difference Result 5168 states and 5694 transitions. [2021-10-16 02:21:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:21:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2021-10-16 02:21:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:07,078 INFO L225 Difference]: With dead ends: 5168 [2021-10-16 02:21:07,078 INFO L226 Difference]: Without dead ends: 3030 [2021-10-16 02:21:07,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:21:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-10-16 02:21:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2674. [2021-10-16 02:21:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.091657313879536) internal successors, (2918), 2673 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2918 transitions. [2021-10-16 02:21:07,201 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2918 transitions. Word has length 337 [2021-10-16 02:21:07,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:07,203 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2918 transitions. [2021-10-16 02:21:07,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2918 transitions. [2021-10-16 02:21:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-10-16 02:21:07,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:07,215 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:07,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:07,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:21:07,431 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1792127901, now seen corresponding path program 1 times [2021-10-16 02:21:07,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:21:07,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461418835] [2021-10-16 02:21:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:07,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:21:07,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:21:07,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:21:07,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:21:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:08,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:21:08,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:21:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 123 proven. 416 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 02:21:17,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 470 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-10-16 02:21:46,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:21:46,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461418835] [2021-10-16 02:21:46,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461418835] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:21:46,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [358773369] [2021-10-16 02:21:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:46,144 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:21:46,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:21:46,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:21:46,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 02:21:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:21:50,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:21:50,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:21:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 02:21:52,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:21:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 520 trivial. 0 not checked. [2021-10-16 02:21:53,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [358773369] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:21:53,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:21:53,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [10, 10] total 23 [2021-10-16 02:21:53,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925815576] [2021-10-16 02:21:53,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:21:53,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:21:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:21:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:21:53,891 INFO L87 Difference]: Start difference. First operand 2674 states and 2918 transitions. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:21:58,316 INFO L93 Difference]: Finished difference Result 5746 states and 6267 transitions. [2021-10-16 02:21:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:21:58,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 471 [2021-10-16 02:21:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:21:58,341 INFO L225 Difference]: With dead ends: 5746 [2021-10-16 02:21:58,341 INFO L226 Difference]: Without dead ends: 3252 [2021-10-16 02:21:58,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1880 GetRequests, 1859 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1048.7ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:21:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-10-16 02:21:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 2674. [2021-10-16 02:21:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0894126449682004) internal successors, (2912), 2673 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2912 transitions. [2021-10-16 02:21:58,449 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2912 transitions. Word has length 471 [2021-10-16 02:21:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:21:58,451 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2912 transitions. [2021-10-16 02:21:58,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:21:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2912 transitions. [2021-10-16 02:21:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2021-10-16 02:21:58,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:21:58,486 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:21:58,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:58,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:21:58,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:21:58,902 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:21:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:21:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1991254208, now seen corresponding path program 1 times [2021-10-16 02:21:58,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:21:58,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012586914] [2021-10-16 02:21:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:21:58,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:21:58,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:21:58,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:21:58,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:22:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:22:02,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 02:22:02,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:22:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 772 proven. 210 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-10-16 02:22:10,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:22:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 982 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-10-16 02:22:43,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:22:43,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012586914] [2021-10-16 02:22:43,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012586914] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:22:43,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:22:43,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 17 [2021-10-16 02:22:43,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417035171] [2021-10-16 02:22:43,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:22:43,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:22:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:22:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:22:43,373 INFO L87 Difference]: Start difference. First operand 2674 states and 2912 transitions. Second operand has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:22:49,345 INFO L93 Difference]: Finished difference Result 5321 states and 5798 transitions. [2021-10-16 02:22:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:22:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 684 [2021-10-16 02:22:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:22:49,367 INFO L225 Difference]: With dead ends: 5321 [2021-10-16 02:22:49,367 INFO L226 Difference]: Without dead ends: 2787 [2021-10-16 02:22:49,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1351 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 751.7ms TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:22:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-10-16 02:22:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2787. [2021-10-16 02:22:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.0857860732232592) internal successors, (3025), 2786 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3025 transitions. [2021-10-16 02:22:49,450 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3025 transitions. Word has length 684 [2021-10-16 02:22:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:22:49,452 INFO L470 AbstractCegarLoop]: Abstraction has 2787 states and 3025 transitions. [2021-10-16 02:22:49,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:22:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3025 transitions. [2021-10-16 02:22:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2021-10-16 02:22:49,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:22:49,462 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:22:49,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:22:49,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:22:49,677 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:22:49,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:22:49,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1752561034, now seen corresponding path program 1 times [2021-10-16 02:22:49,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:22:49,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853886932] [2021-10-16 02:22:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:22:49,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:22:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:22:49,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:22:49,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 02:22:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:22:55,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:22:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:22:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 907 proven. 353 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-16 02:22:57,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:22:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 1260 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-10-16 02:22:59,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:22:59,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853886932] [2021-10-16 02:22:59,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853886932] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:22:59,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:22:59,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-16 02:22:59,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320190610] [2021-10-16 02:22:59,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:22:59,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:22:59,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:22:59,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:22:59,477 INFO L87 Difference]: Start difference. First operand 2787 states and 3025 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:04,264 INFO L93 Difference]: Finished difference Result 6284 states and 6873 transitions. [2021-10-16 02:23:04,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:23:04,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 711 [2021-10-16 02:23:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:04,278 INFO L225 Difference]: With dead ends: 6284 [2021-10-16 02:23:04,278 INFO L226 Difference]: Without dead ends: 3677 [2021-10-16 02:23:04,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1420 GetRequests, 1417 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:23:04,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-10-16 02:23:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3499. [2021-10-16 02:23:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3499 states, 3498 states have (on average 1.0811892510005718) internal successors, (3782), 3498 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 3782 transitions. [2021-10-16 02:23:04,366 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 3782 transitions. Word has length 711 [2021-10-16 02:23:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:04,367 INFO L470 AbstractCegarLoop]: Abstraction has 3499 states and 3782 transitions. [2021-10-16 02:23:04,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 3782 transitions. [2021-10-16 02:23:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2021-10-16 02:23:04,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:04,380 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:04,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-16 02:23:04,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:04,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash 850718162, now seen corresponding path program 1 times [2021-10-16 02:23:04,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:04,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553192935] [2021-10-16 02:23:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:04,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:04,608 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:04,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:23:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:10,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:23:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2293 backedges. 1487 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-10-16 02:23:12,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2293 backedges. 1487 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-10-16 02:23:14,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:14,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553192935] [2021-10-16 02:23:14,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553192935] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:23:14,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:23:14,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:23:14,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732705726] [2021-10-16 02:23:14,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:23:14,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:23:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:14,155 INFO L87 Difference]: Start difference. First operand 3499 states and 3782 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:17,656 INFO L93 Difference]: Finished difference Result 7352 states and 7966 transitions. [2021-10-16 02:23:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:23:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 866 [2021-10-16 02:23:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:17,677 INFO L225 Difference]: With dead ends: 7352 [2021-10-16 02:23:17,678 INFO L226 Difference]: Without dead ends: 4033 [2021-10-16 02:23:17,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1730 GetRequests, 1728 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:23:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-10-16 02:23:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 3855. [2021-10-16 02:23:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3854 states have (on average 1.0635703165542294) internal successors, (4099), 3854 states have internal predecessors, (4099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 4099 transitions. [2021-10-16 02:23:17,776 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 4099 transitions. Word has length 866 [2021-10-16 02:23:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:17,777 INFO L470 AbstractCegarLoop]: Abstraction has 3855 states and 4099 transitions. [2021-10-16 02:23:17,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 4099 transitions. [2021-10-16 02:23:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2021-10-16 02:23:17,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:17,790 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:17,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:18,005 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:18,006 INFO L82 PathProgramCache]: Analyzing trace with hash -133380534, now seen corresponding path program 1 times [2021-10-16 02:23:18,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:18,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905776044] [2021-10-16 02:23:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:18,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:18,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:18,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:18,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-16 02:23:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:23:24,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 2378 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-10-16 02:23:26,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3016 backedges. 2240 proven. 138 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2021-10-16 02:23:30,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:30,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905776044] [2021-10-16 02:23:30,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905776044] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:23:30,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:23:30,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-10-16 02:23:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986157001] [2021-10-16 02:23:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:23:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:23:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:23:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:23:30,032 INFO L87 Difference]: Start difference. First operand 3855 states and 4099 transitions. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:23:33,074 INFO L93 Difference]: Finished difference Result 8420 states and 8941 transitions. [2021-10-16 02:23:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:23:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 965 [2021-10-16 02:23:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:23:33,118 INFO L225 Difference]: With dead ends: 8420 [2021-10-16 02:23:33,126 INFO L226 Difference]: Without dead ends: 4745 [2021-10-16 02:23:33,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1928 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:23:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2021-10-16 02:23:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4033. [2021-10-16 02:23:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.0615079365079365) internal successors, (4280), 4032 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4280 transitions. [2021-10-16 02:23:33,248 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4280 transitions. Word has length 965 [2021-10-16 02:23:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:23:33,250 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 4280 transitions. [2021-10-16 02:23:33,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:23:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4280 transitions. [2021-10-16 02:23:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2021-10-16 02:23:33,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:23:33,267 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:23:33,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:23:33,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:23:33,493 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:23:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:23:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1610431311, now seen corresponding path program 1 times [2021-10-16 02:23:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:23:33,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343242352] [2021-10-16 02:23:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:33,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:23:33,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:23:33,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:23:33,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 02:23:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:23:39,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:23:39,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:23:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 1376 proven. 1594 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2021-10-16 02:23:43,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:23:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 2267 proven. 130 refuted. 0 times theorem prover too weak. 1055 trivial. 0 not checked. [2021-10-16 02:23:55,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:23:55,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343242352] [2021-10-16 02:23:55,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343242352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:23:55,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1938444178] [2021-10-16 02:23:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:23:55,652 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:23:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:23:55,653 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:23:55,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 02:24:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:04,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:24:04,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 1601 proven. 0 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2021-10-16 02:24:07,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3452 backedges. 1601 proven. 0 refuted. 0 times theorem prover too weak. 1851 trivial. 0 not checked. [2021-10-16 02:24:10,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1938444178] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:10,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:24:10,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6, 5] total 14 [2021-10-16 02:24:10,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726269691] [2021-10-16 02:24:10,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:24:10,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:10,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:24:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:24:10,177 INFO L87 Difference]: Start difference. First operand 4033 states and 4280 transitions. Second operand has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:11,542 INFO L93 Difference]: Finished difference Result 7936 states and 8429 transitions. [2021-10-16 02:24:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:24:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 972 [2021-10-16 02:24:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:11,552 INFO L225 Difference]: With dead ends: 7936 [2021-10-16 02:24:11,552 INFO L226 Difference]: Without dead ends: 4033 [2021-10-16 02:24:11,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3884 GetRequests, 3870 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1476.3ms TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:24:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-10-16 02:24:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 4033. [2021-10-16 02:24:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 4032 states have (on average 1.0562996031746033) internal successors, (4259), 4032 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:11,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 4259 transitions. [2021-10-16 02:24:11,620 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 4259 transitions. Word has length 972 [2021-10-16 02:24:11,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:11,621 INFO L470 AbstractCegarLoop]: Abstraction has 4033 states and 4259 transitions. [2021-10-16 02:24:11,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 4259 transitions. [2021-10-16 02:24:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-10-16 02:24:11,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:24:11,639 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:24:11,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:24:11,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-16 02:24:12,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:12,054 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:24:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:24:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1952515600, now seen corresponding path program 1 times [2021-10-16 02:24:12,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:24:12,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385797197] [2021-10-16 02:24:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:12,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:24:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:24:12,059 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:24:12,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-16 02:24:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:24:19,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 1002 proven. 2098 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2021-10-16 02:24:22,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 2452 proven. 75 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-10-16 02:24:27,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:24:27,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385797197] [2021-10-16 02:24:27,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385797197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:24:27,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [579685559] [2021-10-16 02:24:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:24:27,797 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:27,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:24:27,798 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:24:27,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-10-16 02:24:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:24:38,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:24:38,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:24:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 1033 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-10-16 02:24:40,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:24:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3502 backedges. 1033 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-10-16 02:24:42,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [579685559] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:24:42,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-16 02:24:42,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6, 5] total 12 [2021-10-16 02:24:42,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309779352] [2021-10-16 02:24:42,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:24:42,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:24:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:24:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:24:42,509 INFO L87 Difference]: Start difference. First operand 4033 states and 4259 transitions. Second operand has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:24:47,717 INFO L93 Difference]: Finished difference Result 9130 states and 9645 transitions. [2021-10-16 02:24:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:24:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1036 [2021-10-16 02:24:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:24:47,719 INFO L225 Difference]: With dead ends: 9130 [2021-10-16 02:24:47,719 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:24:47,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4140 GetRequests, 4130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 332.2ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:24:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:24:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:24:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:24:47,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1036 [2021-10-16 02:24:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:24:47,726 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:24:47,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:24:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:24:47,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:24:47,729 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:24:47,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-16 02:24:47,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-10-16 02:24:48,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:24:48,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:24:48,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:24:48,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:24:48,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:24:50,299 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-10-16 02:24:50,299 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-10-16 02:24:50,299 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,300 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,301 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,302 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-10-16 02:24:50,303 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-16 02:24:50,304 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,305 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-10-16 02:24:50,306 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,307 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,308 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-10-16 02:24:50,309 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,310 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,311 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-10-16 02:24:50,312 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,313 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-10-16 02:24:50,314 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,315 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-10-16 02:24:50,316 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-10-16 02:24:50,317 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-10-16 02:24:50,318 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-10-16 02:24:50,319 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-10-16 02:24:50,320 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-10-16 02:24:50,321 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-10-16 02:24:50,322 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-10-16 02:24:50,323 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,324 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,324 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse1 (bvslt (_ bv80 32) ~a12~0))) (let ((.cse0 (or (not .cse1) (not (= (_ bv8 32) ~a15~0)))) (.cse4 (bvslt (_ bv11 32) ~a12~0)) (.cse5 (not (= ~a15~0 (_ bv9 32)))) (.cse2 (not (= ~a21~0 (_ bv9 32)))) (.cse3 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse6 (= (_ bv1 32) ~a24~0))) (or (and .cse0 .cse1) (= (_ bv8 32) ~a21~0) (and .cse2 (not (= (_ bv6 32) ~a21~0)) (not (= (_ bv7 32) ~a21~0)) (not .cse3) (not .cse4)) (and .cse0 .cse5 (or (not .cse6) .cse4 (not (= (_ bv7 32) ~a15~0)))) (and .cse2 .cse5) (and .cse2 .cse3 .cse6)))) [2021-10-16 02:24:50,324 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-10-16 02:24:50,324 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-10-16 02:24:50,325 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,326 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,326 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-10-16 02:24:50,326 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-10-16 02:24:50,326 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-10-16 02:24:50,326 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-10-16 02:24:50,326 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,327 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-10-16 02:24:50,328 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,329 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,329 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-16 02:24:50,329 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,329 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-10-16 02:24:50,329 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse1 (bvslt (_ bv80 32) ~a12~0))) (let ((.cse0 (or (not .cse1) (not (= (_ bv8 32) ~a15~0)))) (.cse4 (bvslt (_ bv11 32) ~a12~0)) (.cse5 (not (= ~a15~0 (_ bv9 32)))) (.cse2 (not (= ~a21~0 (_ bv9 32)))) (.cse3 (bvsle ~a12~0 (_ bv4294967253 32))) (.cse6 (= (_ bv1 32) ~a24~0))) (or (and .cse0 .cse1) (= (_ bv8 32) ~a21~0) (and .cse2 (not (= (_ bv6 32) ~a21~0)) (not (= (_ bv7 32) ~a21~0)) (not .cse3) (not .cse4)) (and .cse0 .cse5 (or (not .cse6) .cse4 (not (= (_ bv7 32) ~a15~0)))) (and .cse2 .cse5) (and .cse2 .cse3 .cse6)))) [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-10-16 02:24:50,330 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-10-16 02:24:50,331 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-10-16 02:24:50,332 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-10-16 02:24:50,332 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-10-16 02:24:50,332 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 02:24:50,337 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:24:50,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:24:50 BoogieIcfgContainer [2021-10-16 02:24:50,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:24:50,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:24:50,354 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:24:50,355 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:24:50,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:09" (3/4) ... [2021-10-16 02:24:50,359 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:24:50,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:24:50,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:24:50,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:24:50,404 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:24:50,531 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:24:50,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:24:50,533 INFO L168 Benchmark]: Toolchain (without parser) took 286322.29 ms. Allocated memory was 52.4 MB in the beginning and 775.9 MB in the end (delta: 723.5 MB). Free memory was 27.1 MB in the beginning and 153.0 MB in the end (delta: -125.8 MB). Peak memory consumption was 599.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,533 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:24:50,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1029.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 26.9 MB in the beginning and 41.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 130.94 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 35.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,534 INFO L168 Benchmark]: Boogie Preprocessor took 145.45 ms. Allocated memory is still 67.1 MB. Free memory was 35.3 MB in the beginning and 44.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,535 INFO L168 Benchmark]: RCFGBuilder took 3888.00 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 44.2 MB in the beginning and 45.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,535 INFO L168 Benchmark]: TraceAbstraction took 280943.35 ms. Allocated memory was 83.9 MB in the beginning and 775.9 MB in the end (delta: 692.1 MB). Free memory was 44.7 MB in the beginning and 171.8 MB in the end (delta: -127.0 MB). Peak memory consumption was 624.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,536 INFO L168 Benchmark]: Witness Printer took 177.00 ms. Allocated memory is still 775.9 MB. Free memory was 171.8 MB in the beginning and 153.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:24:50,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 52.4 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1029.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 26.9 MB in the beginning and 41.6 MB in the end (delta: -14.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 130.94 ms. Allocated memory is still 67.1 MB. Free memory was 41.6 MB in the beginning and 35.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 145.45 ms. Allocated memory is still 67.1 MB. Free memory was 35.3 MB in the beginning and 44.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3888.00 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 44.2 MB in the beginning and 45.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 280943.35 ms. Allocated memory was 83.9 MB in the beginning and 775.9 MB in the end (delta: 692.1 MB). Free memory was 44.7 MB in the beginning and 171.8 MB in the end (delta: -127.0 MB). Peak memory consumption was 624.4 MB. Max. memory is 16.1 GB. * Witness Printer took 177.00 ms. Allocated memory is still 775.9 MB. Free memory was 171.8 MB in the beginning and 153.0 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 113]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 280846.4ms, OverallIterations: 13, TraceHistogramMax: 10, EmptinessCheckTime: 171.0ms, AutomataDifference: 63459.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2165.1ms, InitialAbstractionConstructionTime: 19.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1236 SDtfs, 3112 SDslu, 129 SDs, 0 SdLazy, 10460 SolverSat, 1473 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54776.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18378 GetRequests, 18295 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3801.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4033occurred in iteration=11, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 979.1ms AutomataMinimizationTime, 13 MinimizatonAttempts, 3248 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 72 NumberOfFragments, 169 HoareAnnotationTreeSize, 3 FomulaSimplifications, 7498 FormulaSimplificationTreeSizeReduction, 548.8ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 8532 FormulaSimplificationTreeSizeReductionInter, 1608.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 487.9ms SsaConstructionTime, 4495.0ms SatisfiabilityAnalysisTime, 147378.3ms InterpolantComputationTime, 9205 NumberOfCodeBlocks, 9205 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 18378 ConstructedInterpolants, 0 QuantifiedInterpolants, 96876 SizeOfPredicates, 44 NumberOfNonLiveVariables, 10492 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 32 InterpolantComputations, 23 PerfectInterpolantSequences, 42971/48054 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && ~bvslt32(80bv32, a12)) || 8bv32 == a21) || ((((!(a21 == 9bv32) && !(6bv32 == a21)) && !(7bv32 == a21)) && !~bvsle32(a12, 4294967253bv32)) && !~bvslt32(11bv32, a12))) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || ~bvslt32(11bv32, a12)) || !(7bv32 == a15)))) || (!(a21 == 9bv32) && !(a15 == 9bv32))) || ((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && ~bvslt32(80bv32, a12)) || 8bv32 == a21) || ((((!(a21 == 9bv32) && !(6bv32 == a21)) && !(7bv32 == a21)) && !~bvsle32(a12, 4294967253bv32)) && !~bvslt32(11bv32, a12))) || (((!~bvslt32(80bv32, a12) || !(8bv32 == a15)) && !(a15 == 9bv32)) && ((!(1bv32 == a24) || ~bvslt32(11bv32, a12)) || !(7bv32 == a15)))) || (!(a21 == 9bv32) && !(a15 == 9bv32))) || ((!(a21 == 9bv32) && ~bvsle32(a12, 4294967253bv32)) && 1bv32 == a24) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:24:50,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_586319f8-7114-4964-b282-93ba37756043/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...